CN208608712U - Active multifunctional electric leakage protector - Google Patents
Active multifunctional electric leakage protector Download PDFInfo
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- CN208608712U CN208608712U CN201821079612.4U CN201821079612U CN208608712U CN 208608712 U CN208608712 U CN 208608712U CN 201821079612 U CN201821079612 U CN 201821079612U CN 208608712 U CN208608712 U CN 208608712U
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Abstract
The utility model provides a kind of active multifunctional electric leakage protector; including decision circuitry, device, firewire L, zero curve N and ground wire are disconnected, its main feature is that: it disconnects the first normally-closed contact for including in device and the second normally-closed contact is serially connected in respectively on firewire L and zero curve N.There is luminous component one end of a photoelectrical coupler to be connected on ground wire, the other end is connected between the second normally-closed contact and the power connector end of zero curve N, the photo resistance R1 of photoelectrical coupler is connected to the input terminal of decision circuitry, and the output end of decision circuitry is electrically connected with device is disconnected.The luminous component of leakage condition, photoelectrical coupler is powered, and the first normally-closed contact and the second normally-closed contact that device is disconnected as described in decision circuitry active control are opened, and the firewire L and zero curve N is kept to disconnect with the load, avoids the generation of human electric shock's accident.It is at low cost, reliable for operation using photoelectrical coupler as detecting element.In addition, also increasing overtemperature protection device, realize multi-functional.
Description
Technical field
The utility model belongs to general electronic corporation technical field, is related to earth leakage protective device, specifically a kind of active more function
It can earth leakage protective device.
Background technique
Current earth leakage protective device designs human body (or other conductors) as a circuit, and principle is to utilize
Whether the electric current that mutual inductor detection flows in and out electrical appliance is consistent, and it is phase that when leakproof, which flows in and out the current value of electrical appliance,
With, when leaking electricity, leakage current can flow into the earth by human body, and the electric current for flowing in and out mutual inductor at this time has occurred
Difference, then buckle releaser can disconnect main switch, realize the function of power-off protection.Namely: only human body touches electric appliance Shi Caihui
Forming circuit starting buckle releaser disconnects power supply, even if human body does not touch electric appliance circuit, leakage tripping device will not be acted.Therefore, this
Earth leakage protective device belongs to passive-type earth leakage protective device, and core component is to detect whether to leak electricity using mutual inductor.
In general, safely disconnecting the time when electric leakage only has 0.1 second, the existing earth leakage protective device actual switch-off time is long,
The causing death's accident that shocks by electricity can be occurred by leading to the electric appliance with earth leakage protective device also, the main reason is that the switch contact of buckle releaser is
It is powered for a long time, is often adhered, causes turn-off time elongated or can not disconnect.
In addition, current Overtemp. protector is usually that bimetal leaf material is directly turned off or connected, electric current is direct
Flow through contact.This mode is suitably applied in low current circuit, and when electric current is bigger, high current, which flows through bimetal leaf, to be made
Connect at contact is molten, contact can not often disconnect.In addition, the volume of high current temperature controller is also bigger, space when contact heating body
Often it is restricted.
So that earth leakage protective device is realized active earth leakage protective, improve security reliability, earth leakage protective device and overtemperature are protected
It protects device to organically combine, improves service performance.This is current this field technical problem urgently to be resolved.
Summary of the invention
The utility model to solve the above problems existing in the prior art, provides a kind of active multifunctional electric leakage protection
Device does not need human body forming circuit, as long as circuit leaks electricity, the main switch for connecting load be will disconnect, and improving safety can
By property, the generation of human electric shock's accident is avoided.
The purpose of this utility model is achieved through the following technical solutions:
A kind of active multifunctional electric leakage protector, including decision circuitry, disconnect device, one end and connect to power supply, is another
Firewire L, zero curve N and the ground wire at end and load connection, which is characterized in that the first normally closed touching for including in the disconnection device
Point K1 and the second normally-closed contact K2 are serially connected in respectively on the firewire L and zero curve N；Earth leakage protective device further includes photoelectrical coupler,
Luminous component one end of the photoelectrical coupler is connected on the ground wire, and the other end is connected to the second normally-closed contact K2
On the zero curve N between the power connector end of the zero curve N, the photo resistance R1 of the photoelectrical coupler 1 is connected to institute
The input terminal of decision circuitry is stated, the output end of the decision circuitry is electrically connected with the disconnection device；Leakage condition, the photoelectricity
The luminous component of coupler 1 is powered, and the first normally-closed contact K1 and the of device is disconnected as described in the decision circuitry active control
Two normally-closed contact K2 are opened, and the firewire L and zero curve N is kept to disconnect with the load.
A kind of improvement to above-mentioned technical proposal: the decision circuitry include DC power supplier, operational amplifier F and
Its biasing circuit, the disconnection device includes buckle releaser, and the photo resistance R1 of the photoelectrical coupler is connected to the fortune
The signal input part of amplifier F is calculated, the signal output end of the operational amplifier F is connected to the buckle releaser.
Improve the another kind of above-mentioned technical proposal: the decision circuitry includes DC power supplier and operational amplifier
F and its biasing circuit；The disconnection device includes intermediate relay J, triode D and its biasing circuit, the intermediate relay
Device J includes two normally-closed contacts of two normally-closed contacts and normally opened contact a J3, the intermediate relay J as described the
One normally-closed contact K1 and the second normally-closed contact K2；The photo resistance R1 of the photoelectrical coupler is connected to the operational amplifier
The signal input part of F, the signal output end of the operational amplifier F are connect with the base stage b of the triode D, the centre after
The coil tandem of electric appliance J is between the working power that the collector c of the triode D and the DC power supplier provide, institute
The one end for stating normally opened contact J3 is connect with the collector c of the triode D, the normally opened contact J3 other end and a normally closed button
One end of K connects, and the other end of the normally closed button K with working power is connect.
Increase above-mentioned technical proposal a kind of improvement of overtemperature prote: having one end and the working power of an overtemperature protection device
Connection, the other end are connect with the buckle releaser, and the overtemperature protection device is low current open type temperature detect switch (TDS).
Increase the another of overtemperature prote to above-mentioned technical proposal to improve: having one end and the work electricity of an overtemperature protection device
It connects to source, the other end is connect with the collector c of the coil of the intermediate relay J and triode D, the overtemperature protection device
For low current open type temperature detect switch (TDS).
Further improvement to above-mentioned technical proposal: including adjusting resistance R2 in the decision circuitry.Adjustable operation is put
The output sensitivity of big device F namely earth leakage protective sensitivity.
Further improvement to above-mentioned technical proposal: each component of the earth leakage protective device is arranged in box body, the box
Pcb board is set in body, and each component of the earth leakage protective device is mounted on the pcb board, the firewire L, zero curve N and ground wire
Power connector end is drawn from one end of the box body, and the firewire L and zero curve N load connecting pin are drawn from the box body other end
Out, the box body cover face setting reset switch, indicator light key, the reset switch be the buckle releaser reset switch or
The normally closed button K of the intermediate relay J connection, the indicator light is LED light, and is connect with working power.
The utility model compared with prior art the advantages of and good effect be:
1, the utility model has thoroughly overturned the working principle of current earth leakage protective device, and the basic principle of the utility model is
It is connected to zero curve and ground wire using luminous component, detects whether to leak electricity using photo resistance, uses executive device after electric leakage at once
Disconnect power supply.Because do not need human body forming circuit, after leaking electricity just disconnection, we can it be referred to as active leakage
Non-electricity protector.Its core component is photo resistance.Once circuit leaks electricity, the photo resistance R1 in photoelectrical coupler is by light
Resistance value according to after reduces rapidly, the driving breaker device work of the output signal of operational amplifier F, makes the first normally-closed contact K1 and the
Two output normally-closed contact K2 are disconnected, and are actively disconnected the firewire L and zero curve N of connection load (electrical appliance), are thoroughly avoided people
The generation of body electric shock accidents.
2, the utility model uses photoelectrical coupler as detecting element, small in size, at low cost, reliable for operation.
3, the utility model is connect using low current open type temperature detect switch (TDS) with buckle releaser, or is connected between relay
Wire loop in, temperature detect switch (TDS) closure makes intermediate relay work when overtemperature, utilizes the normally-closed contact cutting of intermediate relay
Major loop, overcomes that high current Overtemp. protector volume is big, the molten disadvantage connected in contact.
4, the utility model makes full use of in earth leakage protective device and takes off using low current temperature detect switch (TDS) as overtemperature protection device
The break function of device is detained, it is at low cost, safe and reliable to operation.
Detailed description of the invention
Fig. 1 is the electrical block diagram of the active multifunctional electric leakage protector of the utility model；
Fig. 2 is the circuit diagram of the active multifunctional electric leakage protector embodiment 1 of the utility model；
Fig. 3 is the circuit diagram of the active multifunctional electric leakage protector embodiment 2 of the utility model；
Fig. 4 is the circuit diagram of the active multifunctional electric leakage protector embodiment 3 of the utility model；
Fig. 5 is the circuit diagram of the active multifunctional electric leakage protector embodiment 4 of the utility model.
Figure label are as follows: 1- photoelectrical coupler, 2- decision circuitry, 3- disconnect device, 4- DC power supplier, 5- overtemperature and protect
Protection unit.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing: Overtemp. protector 5
Referring to Fig. 1, a kind of specific embodiment of active multifunctional electric leakage protector of the utility model, including judgement electricity
Road 2 disconnects device 3, firewire L, zero curve N and the ground wire that one end connects to power supply, the other end is connected with load.The disconnection dress
It sets the first normally-closed contact K1 for including in 3 and the second normally-closed contact K2 is serially connected in respectively on the firewire L and zero curve N；Electric leakage is protected
Protecting device further includes photoelectrical coupler 1, and luminous component one end of the photoelectrical coupler 1 is connected on the ground wire, the other end
It is connected on the zero curve N between the second normally-closed contact K2 and the power connector end of the zero curve N, the photoelectric coupling
The photo resistance R1 of device 1 is connected to the input terminal of the decision circuitry 2, and the output end of the decision circuitry 2 and the disconnection fill
Set 3 electrical connections；The luminous component of leakage condition, the photoelectrical coupler 1 is powered, as described in 2 active control of decision circuitry
The the first normally-closed contact K1 and the second normally-closed contact K2 for disconnecting device 3 are opened, and the firewire L and zero curve N is kept to bear with described
It carries and disconnects.
Referring to fig. 2, a kind of specific embodiment 1 of active multifunctional electric leakage protector of the utility model: with it is above-mentioned specific
The structure of embodiment is essentially identical, specifically: above-mentioned decision circuitry 2 include DC power supplier 4, operational amplifier F and
Its biasing circuit, disconnecting device 3 includes buckle releaser, and the photo resistance R1 of photoelectrical coupler 1 is connected to the operational amplifier F's
The signal output end of signal input part, the operational amplifier F is connected to buckle releaser 3.
Referring to Fig. 3, a kind of specific embodiment 2 of active multifunctional electric leakage protector of the utility model: with above-mentioned implementation
The structure of example 1 is essentially identical, only increases overtemperature protection device, and overtemperature protection device is low current open type temperature detect switch (TDS) 5,
One end of the normally opened temperature detect switch (TDS) 5 of low current is connect with working power, and the other end is connect with the buckle releaser.
Referring to fig. 4, a kind of specific embodiment 3 of active multifunctional electric leakage protector of the utility model: with it is above-mentioned specific
The structure of embodiment is essentially identical, specifically: the decision circuitry 2 includes DC power supplier 4 and operational amplifier F
And its biasing circuit；The disconnection device 3 includes intermediate relay J, triode D and its biasing circuit, the intermediate relay
Device J includes two normally-closed contacts of two normally-closed contacts and normally opened contact a J3, the intermediate relay J as described the
One normally-closed contact K1 and the second normally-closed contact K2；The photo resistance R1 of the photoelectrical coupler 1 is connected to the operation amplifier
The signal input part of device F, the signal output end of the operational amplifier F are connect with the base stage b of the triode D, the centre
The coil tandem of relay J the triode D collector c and the DC power supplier 4 provide working power between,
One end of the normally opened contact J3 is connect with the collector c of the triode D, and the normally opened contact J3 other end normally closed is pressed with one
One end of button K connects, and the other end of the normally closed button K with working power is connect.
Referring to Fig. 5, a kind of specific embodiment 4 of active multifunctional electric leakage protector of the utility model: with above-mentioned implementation
The structure of example 3 is essentially identical, only increases overtemperature protection device, and the overtemperature protection device is the temperature control of low current open type
One end of switch 5, the normally opened temperature detect switch (TDS) 5 of low current with working power is connect, and the other end is with the intermediate relay J's
The collector c connection of coil and triode D.
The luminous component of the photoelectrical coupler 1 of the utility model is LED light, neon lamp or other similar light-emitting component.Photoelectricity
The photo resistance R1 of coupler 1 leads to its resistance variations by luminous component light varience, and volume very little, cost is very low, fortune
Row is reliable.After the active multifunctional electric leakage protector of the utility model connects load (electrical appliance), when circuit leakproof, on ground wire
There is no electric current to flow through, the luminous component of photoelectrical coupler 1 does not work, and the resistance value of the photo resistance R1 of photoelectrical coupler 1 is relatively high, fortune
The output signal for calculating amplifier F is not enough to driving magnetictrip 3(or intermediate relay J) work.When circuit electric leakage, shine
Component energization is lit, and photo resistance R1 is reduced rapidly (when reaching setting resistance value) by the resistance value after illumination, operational amplifier F
Output signal drive magnetictrip 3(or intermediate relay J) work, the first normally-closed contact K1 and the second normally-closed contact K2 are protected
Off-state is held, actively disconnects the firewire L and zero curve N of connection load (electrical appliance), does not need human body forming circuit, Ji Kebao
Electric shock accidents will not occur for card.
It as Figure 2-Figure 5, include adjusting resistance R2 in decision circuitry 2, the output that operational amplifier F is adjusted is sensitive
Degree namely earth leakage protective sensitivity.
A kind of each component of active multifunctional electric leakage protector of the utility model is arranged in box body, sets in the box body
Pcb board is set, each component of the earth leakage protective device is mounted on the pcb board, and the power supply of the firewire L, zero curve N and ground wire connects
It connects end to draw from one end of the box body, the firewire L and zero curve N load connecting pin are drawn from the box body other end, described
Box body cover face setting reset switch, indicator light key, the reset switch be the buckle releaser reset switch or it is described in
Between relay J connection normally closed button K, the indicator light is LED light, and is connect with working power.
Certainly, the above description is not intended to limit the present invention, and the utility model is also not limited to the example above, this
The those of ordinary skill of technical field, the made variations, modifications, additions or substitutions in the essential scope of the utility model,
Also belong to the protection scope of the utility model.
Claims (8)
1. a kind of active multifunctional electric leakage protector, including decision circuitry, disconnect device, one end connects to power supply, the other end
With firewire L, zero curve N and the ground wire of load connection, which is characterized in that the first normally-closed contact for including in the disconnection device
K1 and the second normally-closed contact K2 are serially connected in respectively on the firewire L and zero curve N；Earth leakage protective device further includes photoelectrical coupler, institute
The luminous component one end for the photoelectrical coupler stated is connected on the ground wire, the other end be connected to the second normally-closed contact K2 with
On the zero curve N between the power connector end of the zero curve N, the photo resistance R1 of the photoelectrical coupler, which is connected to, described to be sentenced
The input terminal of deenergizing, the output end of the decision circuitry are electrically connected with the disconnection device；Leakage condition, the photoelectric coupling
The luminous component of device is powered, and the first normally-closed contact K1 and second that device is disconnected as described in the decision circuitry active control is normally closed
Contact K2 is opened, and the firewire L and zero curve N is kept to disconnect with the load.
2. active multifunctional electric leakage protector described in accordance with the claim 1, which is characterized in that the decision circuitry includes
DC power supplier, operational amplifier F and its biasing circuit, the disconnection device includes buckle releaser, the photoelectric coupling
The photo resistance R1 of device is connected to the signal input part of the operational amplifier F, and the signal output end of the operational amplifier F connects
It is connected to the buckle releaser.
3. active multifunctional electric leakage protector described in accordance with the claim 1, which is characterized in that the decision circuitry includes
DC power supplier and operational amplifier F and its biasing circuit；The disconnection device include intermediate relay J, triode D and
Its biasing circuit, the intermediate relay J include two normally-closed contacts and a normally opened contact J3, the intermediate relay J's
Two normally-closed contacts are as the first normally-closed contact K1 and the second normally-closed contact K2；The photosensitive electricity of the photoelectrical coupler
Resistance R1 is connected to the signal input part of the operational amplifier F, the signal output end and the triode of the operational amplifier F
The base stage b connection of D, the collector c and the DC power supply mould of the coil tandem of the intermediate relay J in the triode D
Between the working power that block provides, one end of the normally opened contact J3 is connect with the collector c of the triode D, described normally opened
The contact J3 other end is connect with one end of a normally closed button K, and the other end of the normally closed button K with working power is connect.
4. active multifunctional electric leakage protector according to claim 2, which is characterized in that there is an overtemperature protection device
One end is connect with working power, and the other end is connect with the buckle releaser, and the overtemperature protection device is the temperature control of low current open type
Switch.
5. active multifunctional electric leakage protector described in accordance with the claim 3, which is characterized in that there is an overtemperature protection device
One end with working power is connect, and the other end is connect with the collector c of the coil of the intermediate relay J and triode D, described
Overtemperature protection device is low current open type temperature detect switch (TDS).
6. according to the described in any item active multifunctional electric leakage protectors of claim 1-5, which is characterized in that the judgement electricity
It include adjusting resistance R2 in road.
7. according to active multifunctional electric leakage protector described in claim 2 or 4, which is characterized in that the earth leakage protective device
Each component be arranged in box body, pcb board is set in the box body, and each component of the earth leakage protective device is mounted on the PCB
On plate, the power connector end of the firewire L, zero curve N and ground wire is drawn from one end of the box body, and the firewire L and zero curve N are negative
It carries connecting pin to draw from the box body other end, the box body covers face setting reset switch, indicator light key, and the reset is opened
The reset switch for the buckle releaser is closed, the indicator light is LED light, and is connect with working power.
8. according to active multifunctional electric leakage protector described in claim 3 or 5, which is characterized in that the earth leakage protective device
Each component be arranged in box body, pcb board is set in the box body, and each component of the earth leakage protective device is mounted on the PCB
On plate, the power connector end of the firewire L, zero curve N and ground wire is drawn from one end of the box body, and the firewire L and zero curve N are negative
It carries connecting pin to draw from the box body other end, the box body covers face setting reset switch, indicator light key, and the reset is opened
The normally closed button K for the intermediate relay J connection is closed, the indicator light is LED light, and is connect with working power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821079612.4U CN208608712U (en) | 2018-07-09 | 2018-07-09 | Active multifunctional electric leakage protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821079612.4U CN208608712U (en) | 2018-07-09 | 2018-07-09 | Active multifunctional electric leakage protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208608712U true CN208608712U (en) | 2019-03-15 |
Family
ID=65668056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821079612.4U Active CN208608712U (en) | 2018-07-09 | 2018-07-09 | Active multifunctional electric leakage protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208608712U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108565830A (en) * | 2018-07-09 | 2018-09-21 | 相变能源科技（青岛）有限公司 | Active multifunctional electric leakage protector |
-
2018
- 2018-07-09 CN CN201821079612.4U patent/CN208608712U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108565830A (en) * | 2018-07-09 | 2018-09-21 | 相变能源科技（青岛）有限公司 | Active multifunctional electric leakage protector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Active multifunctional leakage protector Effective date of registration: 20220124 Granted publication date: 20190315 Pledgee: Qingdao high technology financing Company limited by guarantee Pledgor: PCE TECHNOLOGY (QINGDAO) CO.,LTD. Registration number: Y2022370010015 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20221128 Granted publication date: 20190315 Pledgee: Qingdao high technology financing Company limited by guarantee Pledgor: PCE TECHNOLOGY (QINGDAO) CO.,LTD. Registration number: Y2022370010015 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |